Analysis of the Internal Flow Field Characteristics of a Novel Cyclone Dust Removal Device

This paper presents a novel cyclone dust removal device and conducts a preliminary investigation into its internal flow field characteristics. The device is equipped with an impeller with Archimedean spiral characteristics and a whip sheath structure arranged in a circle. Using the computational fluid dynamics (CFD) method, the velocity field, pressure field, vortex structure, and fluid trajectory characteristics are studied under the condition of a fixed rotational speed and different inlet velocities. The simulation results demonstrate that, under a fixed rotational speed of 24.5 rps and TSR = 2.0, the downstream vortex system of the impeller is more coherent and structured, developing into a stable configuration with alternating positive and negative vorticity. When the whip sheath structure is added, a larger radial velocity is generated. This study reveals the unique internal flow field evolution law of the device, which provides a theoretical basis for subsequent particle separation research.